445311380 has 12 divisors (see below), whose sum is σ = 935153940. Its totient is φ = 178124544.

The previous prime is 445311301. The next prime is 445311401. The reversal of 445311380 is 83113544.

It can be written as a sum of positive squares in 2 ways, for example, as 46430596 + 398880784 = 6814^2 + 19972^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11132765 + ... + 11132804.

It is an arithmetic number, because the mean of its divisors is an integer number (77929495).

Almost surely, 2^445311380 is an apocalyptic number.

It is an amenable number.

445311380 is an abundant number, since it is smaller than the sum of its proper divisors (489842560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445311380 is a wasteful number, since it uses less digits than its factorization.

445311380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22265578 (or 22265576 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 445311380 is about 21102.4022329213. The cubic root of 445311380 is about 763.6387028290.

The spelling of 445311380 in words is "four hundred forty-five million, three hundred eleven thousand, three hundred eighty".